BiguanideGeneric available
Metformin
Sold as Glucophage, Fortamet, Glumetza
Metformin is the first-line oral medication for type 2 diabetes. It lowers the amount of glucose your liver makes and helps your body respond better to insulin.
Compare prices →~$4.00 / mo (generic, NADAC)
What it treats
Type 2 diabetes mellitus, alone or with other diabetes drugs.
Typical dosing
Typical adult dose: 500 mg twice daily with meals, titrated up to 2000 mg/day max.
Side effects
Common: nausea, diarrhea, gas, metallic taste — usually improves in 1–2 weeks. Rare: lactic acidosis (severe).
Interactions to know
Tell your doctor before any imaging study with IV contrast. Alcohol increases lactic acidosis risk.
Pregnancy & breastfeeding
Generally considered safe in pregnancy; discuss with your obstetrician.
Educational only. Not medical advice. Always confirm with your prescriber or pharmacist.